2007 INFINITI QX56 ignition

AV-2
Wiring Diagram - COMM - ......................................86
Terminal and Reference Value for NAVI Control
Unit .........................................................................
89
Terminal and Reference Value for Display Control
unit ..........................................................................
91
Terminal and Reference Value for Display unit ......95
Terminal and Reference Value for AV Switch ........96
Terminal and Reference Value for BCM .................97
On Board Self-Diagnosis Function .........................97
Self-Diagnosis Mode (DCU) ...................................98
Self-Diagnosis Mode (NAVI) ..................................101
Confirmation/Adjustment Mode .............................103
CAN Diagnostic Support Monitor ...........................109
AV Switch Self-Diagnosis Function .......................110
Power Supply and Ground Circuit Inspection for
NAVI Control Unit ..................................................
110
Power Supply and Ground Circuit Inspection for
Display Control Unit ...............................................
111
Power Supply and Ground Circuit Inspection for
Display Unit ...........................................................
112
Power Supply and Ground Circuit Inspection for
AV Switch ..............................................................
113
Vehicle Speed Signal Inspection for NAVI Control
Unit ........................................................................
114
Vehicle Speed Signal Inspection for Display Con-
trol Unit ..................................................................
115
Illumination Signal Inspection for NAVI Control
Unit ........................................................................
116
Illumination Signal Inspection for Display Control
Unit ........................................................................
116
Ignition Signal Inspection for NAVI Control Unit ....117
Ignition Signal Inspection for Display Control Unit ..117
Reverse Signal Inspection for NAVI Control Unit ..117
Reverse Signal Inspection for Display Control Unit
..
118
AV Communication Line Check (Between Display
Control Unit and NAVI Control Unit) ......................
118
Audio Communication Line Check (Between Dis-
play Control Unit and Audio Unit) ..........................
119
Display Communication Line Check (Between
Display Control Unit and Display Unit) ...................
121
AV Communication Line Check (Between Display
Control Unit and AV Switch) ..................................
122
CAN Communication Line Check ..........................123
If NAVI Control Unit Detects That DVD-ROM Map
Is Not Inserted .......................................................
123
If NAVI Control Unit Detects That Inserted DVD-
ROM Map Is Malfunctioning or If It Is Impossible to
Load Data from DVD-ROM Map ...........................
123
If Connection Between NAVI Control Unit and
GPS Antenna Is Malfunctioning ............................
124
Operating Screen for Audio and A/C Is Not Dis-
played When Showing NAVI Screen ....................
124
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Bluish) ............................................
125
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Reddish) .........................................
126
Color of RGB Image Is Not Proper (Only NAVI
Screen Looks Yellowish) .......................................
127
Color of RGB Image Is Not Proper (All Screens
Look Bluish) ..........................................................
128
Color of RGB Image Is Not Proper (All Screens
Look Reddish) .......................................................
129
Color of RGB Image Is Not Proper (All Screens
Look Yellowish) .....................................................
129
NAVI Screen Is Rolling .........................................130
Guide Sound Is Not Heard ....................................132
Screen Is Not Shown ............................................132
A/C Screen Is Not Shown (NAVI Screen Is
Shown) ..................................................................
133
FUEL ECONOMY Screen Is Not Shown ..............133
Average Fuel Economy Display Is Not Shown ("
*** " Is Shown) .......................................................
133
Distance to Empty Display Is Not Shown (" *** " Is
Shown) ..................................................................
133
Driving Distance or Average Speed Display Is Not
Shown (" *** " Is Shown) .......................................
134
WARNING DOOR OPEN Screen Is Not Shown ...134
Unable to Operate All of AV Switches (Unable to
Start Self-Diagnosis) .............................................
134
Audio Does Not Work ...........................................135
Navigation System Does Not Activate ..................135
Previous NAVI Conditions Are Not Stored ............135
Previous Vehicle Conditions Are Not Stored ........135
Position of Current Location Mark Is Not Correct .135
Radio Wave from GPS Satellite Is Not Received .136
Driving Test ...........................................................136
Example of Symptom Judged Not Malfunction .....137
Program Loading of NAVI Control Unit .................145
Removal and Installation .......................................145

AV-6
< SERVICE INFORMATION >
AUDIO
System Description
INFOID:0000000003533664
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times
• through 15A fuse [No. 17, located in the fuse block (J/B)]
• to subwoofer terminal 6
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to audio unit terminal 6
• to BOSE speaker amp. terminal 1
• to AV switch terminal 1 and
• to display control unit terminal 1.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to audio unit terminal 10 and
• to AV switch terminal 2 and
• to display control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 12, located in the fuse block (J/B)]
• to display control unit terminal 12.
Ground is supplied through the case of the audio unit.
Ground is also supplied
• to subwoofer terminal 5
• through body grounds B7 and B19 and
• to BOSE speaker amp. terminal 17
• to AV switch terminal 5 and
• to display unit terminal 1 and
• to display control unit terminal 3
• through body grounds M57, M61 and M79.
Then audio signals are supplied
• through audio unit terminals 1, 2, 3, 4, 13, 14, 15 and 16
• to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29 and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied
• through BOSE speaker amp. terminals 2, 3, 9,10,11,12, 13, 14, 15, 16, 18 and 19
• to terminals + and - of front door speaker LH and RH and
• to terminals + and - of front tweeter LH and RH and
• to terminals + and - of center speaker and
• to terminals + and - of rear door speaker LH and RH and
• to terminals + and - of rear door tweeter LH and RH and
• to terminals 1 and 2 of subwoofer.
When one of steering wheel audio control switches is pushed, the resistance in steering switch circuit changes
depending on which button is pushed.
Rear Audio Remote Control Unit
Power is supplied
• from audio unit terminal 32
• to rear audio remote control unit terminal 13.
Ground is supplied
• to rear audio remote control unit terminal 15
7. Display control unit
M94, M958. Front tweeter RH
M 1119. AV Switch
M98
10. Audio unit
M43, M44, M45, M4611. BOSE speaker amp
M112, M11312. Satellite radio tuner (pre-wiring or factory
installed, if equipped)
M41
13. Steering wheel audio control switches 14. Front door speaker LH, RH
D12, D11215. Rear door tweeter LH, RH
D208, D308
16. Rear door speaker LH, RH
D207, D30717. Driver seat 18. Subwoofer
B72
19. Rear audio remote control unit
R204

AUDIO
AV-7
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
AV
N
O
P
• through body grounds B117 and B132.
Audio signals are supplied
• through audio unit terminals 26, 27, 28 and 29
• to terminals 1, 2, 3, and 4 of rear audio remote control unit.
Satellite Radio Tuner (Pre-wiring)
NOTE:
The satellite radio pre-wiring allows connection of a satellite radio tuner.
Power is supplied at all times
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to satellite radio tuner terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to satellite radio tuner terminal 36.
Audio signals are supplied
• through satellite radio tuner terminals 21, 22, 23 and 24
• to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner.
Satellite Radio Tuner (Factory Installed)
NOTE:
Factory installed satellite radio systems may be identified by the location of the satellite radio tuner (factory
installed) antenna. Factory installed satellite radio antennas are installed on the front of the roof. Dealer
installed antennas may be installed anywhere on the roof.
Power is supplied at all times
• through 20A fuse [No. 31, located in the fuse and fusible link box]
• to satellite radio tuner (factory installed) terminal 32.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 4, located in the fuse block (J/B)]
• to satellite radio tuner (factory installed) terminal 36.
Radio signals are supplied from the satellite radio antenna to satellite radio tuner (factory installed) terminal
37.
Audio signals are supplied
• through satellite radio tuner (factory installed) terminals 21, 22, 23 and 24
• to terminals 41, 42, 43 and 44 of audio unit.
Ground is supplied through the case of the satellite radio tuner (factory installed).
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.

AV-20
< SERVICE INFORMATION >
AUDIO
Terminal and Reference Value for Audio Unit
INFOID:0000000003533667
Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
2 (W) 1 (B)Audio sound
signal front
LHOutput ONReceive audio
signalNo sound from front
door speaker LH or
tweeter LH.
4 (Y) 3 (BR)Audio sound
signal front
RHOutput ONReceive audio
signalNo sound from front
door speaker RH or
tweeter RH.
5 (G/W) GroundAntenna
signalOutput ON – More than 10V Poor radio reception.
6 (Y) GroundBattery pow-
erInput – – Battery voltageSystem does not
work properly.
7 (BR) GroundIllumination
control sig-
nalInput ONIllumination con-
trol switch is op-
erated by lighting
switch in 1st posi-
tion.Changes between 0 and 12VAudio unit illumina-
tion cannot be con-
trolled.
8 (R/L) GroundIllumination
signalInput OFFLighting switch is
in 1st position.Battery voltageAudio unit illumina-
tion does not come
on when lighting
switch is in 1st posi-
tion. Lighting switch is
OFF.3V or less
9–Shield –– – 0VInterference and dis-
tortion heard from
speakers.
10 (V) Ground ACC signal Input ON – Battery voltageSystem does not
work properly.
12 (G/W) GroundAmp. ON
signalOutput ON – More than 6.5VAmp. does not work
properly.
14 (BR) 13 (B/R)Audio sound
signal rear
LHOutput ONReceive audio
signalNo sound from rear
door speaker LH or
rear door tweeter LH.
SKIA0177E
SKIA0177E
SKIA0177E

AUDIO
AV-21
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
AV
N
O
P
16 (L) 15 (B/W)Audio sound
signal rear
RHOutput ONReceive audio
signalNo sound from rear
door speaker RH or
rear door tweeter
RH.
21 (V) GroundRemote
control AOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
22 (P) GroundRemote
control BOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
23 (BR/Y) GroundRemote
control COutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
24 (L) GroundRemote
control DOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate properly.
25 (LG) –Remote
control
ground–– – 0VRear audio remote
control switches do
not function.
27 (O/L) 26 (O)Audio sound
signal LHOutput ONReceive audio
signalNo sound from LH
headphone channel.
29 (W) 28 (W/L)Audio sound
signal RHOutput ONReceive audio
signalNo sound from RH
headphone channel.
30 – Shield – – – 0VInterference and dis-
tortion heard from
headphones or rear
audio remote control
unit switches not op-
erating properly.
31 (O) GroundRemote
control en-
able signalOutput ON Audio unit ON 5VRear audio remote
control unit does not
operate.
32 (V) GroundRemote
control
switch pow-
er supplyOutput ON Audio unit ON 12VRear audio remote
control unit does not
operate. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0177E
SKIA0177E
SKIA0177E

AV-22
< SERVICE INFORMATION >
AUDIO
42 (R) 41 (G)Audio left
channel
sound signal
from satel-
lite radio
tunerInput ONReceive audio
signalNo sound from satel-
lite radio tuner left
channel.
44 (W) 43 (B)Audio right
channel
sound signal
from satel-
lite radio
tunerInput ONReceive audio
signalNo sound from satel-
lite radio tuner right
channel.
45 –Shield
ground (au-
dio signal)–– – 0V –
46 –Shield
ground (da-
ta)–– – 0V –
48 (L) GroundSatellite ra-
dio tuner re-
quest to
audio unitInput ONTurn audio unit
ON 5VSatellite radio tuner
does not operate
properly.
49 (O/L) Ground Audio RX Input ONOperate audio
volume Satellite radio tuner
audio information
does not display
properly.
50 (W/L) Ground Audio TX Output ONOperate audio
volume Satellite radio tuner
audio information
does not display
properly.
65 (O/L) Ground Audio RX Input ONOperate audio
volume Audio does not oper-
ate properly. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA0177E
SKIA0177E
SKIA4403E
SKIA4402E
SKIA4403E

AUDIO
AV-23
< SERVICE INFORMATION >
C
D
E
F
G
H
I
J
L
MA
B
AV
N
O
P
Terminal and Reference Value for BOSE Speaker AmpINFOID:0000000003533668
66 (W/L) Ground Audio TX Output ONOperate audio
volume Audio does not oper-
ate properly.
67 – Shield – ON – 0VInterference and dis-
tortion heard from
speakers.
70 – Shield – – – 0VInterference and dis-
tortion heard from
speakers.
71 (B) 69 (W)Voice guide
signalOutput ONPress the
"GUIDE/VOICE"
button.Only route guide and
operation guide are
not heard.
72 (W/B) GroundCD eject sig-
nalInput ONOperate EJECT
button0V→5VCD will not eject from
audio unit.
73 (Y/B) GroundCD load sig-
nalInput ONOperate LOAD
button0V→5VCD will not load into
audio unit. Te r m i n a l
(Wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of symptom
+–Ignition
switchOperation
SKIA4402E
SKIA0171J
Te r m i n a l
(wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) Ground Battery Input – – Battery voltageSystem does not
work properly.
9 (SB) 10 (B/Y)Rear door
speaker LH
and rear door
tweeter LHOutput ONReceive audio
signalNo sound from rear
door speaker LH or
rear door tweeter
LH.
11 (O/L) 12 (R/L)Rear door
speaker RH
and rear door
tweeter RHOutput ONReceive audio
signalNo sound from rear
door speaker RH
or rear door tweet-
er RH.
SKIA0177E
SKIA0177E

AV-24
< SERVICE INFORMATION >
AUDIO
13 (L/W) 14 (L/R)Front door
speaker LH
and front
tweeter LHOutput ONReceive audio
signalNo sound from
front door speaker
LH or front tweeter
LH.
15 (W/B) 16 (L/B)Front door
speaker RH
and front
tweeter RHOutput ONReceive audio
signalNo sound from
front door speaker
RH or front tweeter
RH.
17 (B) Ground Ground – ON – – –
18 (V) 2 (R)Center speak-
erOutput ONReceive audio
signalNo sound from
center speaker.
19 (W) 3 (B) Subwoofer Output ONReceive audio
signalNo sound from
subwoofer.
22
(W/G)GroundSubwoofer ON
signalInput ON – More than 6.5VSubwoofer does
not work properly.
24 (L) 23 (B/W)Audio sound
signal rear RHInput ONReceive audio
signalNo sound from rear
door speaker RH
or rear door tweet-
er RH.
26 (BR) 25 (B/R)Audio sound
signal rear LHInput ONReceive audio
signalNo sound from rear
door speaker LH or
rear door tweeter
LH. Te r m i n a l
(wire color)
ItemSignal
input/
outputCondition
Reference value
(Approx.)Example of
symptom
+–Ignition
switchOperation
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E
SKIA0177E